Automatic stopping and starting device for phonographs



J. AIEIT UTIS. AUTOMATIC STOPPING AND STARTING DEVICE FOR PHONOGRAPHS.

APPLICATION FILED DEC-26.4919. {1,390,682. PatentedSept. 13,1921.

3 SHEETS-SHEET I.

, I J. A. EITUTIS. AUTOMATIC STOPPING AND STARTING DEVICE" FOR PHONOGRAPHS.

APPLICATION FILED 11 50.26, I919- Patented Sept. 13,1921.

3 SHEETS-SHEET 2.

(mum

. I. A. EITUTIS. AUTOMATIC STOPPING AND STARTING DEVICE FOR PHO APPLICATION FILED DEC.26, 1919.

NOGRAPHS.

3 SHEETS-SHEET 3.

larly pointed out in the appended claims.

PM E sTAW N'I- a a ti wxslbrn qg r nm p v mrnmhqsrdrnme mammal an pvbavgmnw is asabatsz-"v itnwyaonaemix 7 t nia wiresidin at Ohio Be it known that 1, Joan A. Emma-Is, a citiiaenof the present government of Lithuaim the county of Qook and: tate oi Iii Innis, have invented new and useful Imeproaemenfla in Antomatic Stopping and Staining Devices {for Phonographs, of which the nolllowingis a lepecication. a

1 This inventionrelabet to an automatic starting and stopping @alaa ice for i phone graphs.

Among the objects of my invention is to provide a device which may be set to automatically stop the turn-"table when the playof the record thereon has ceased, no matter what the diameter of the record may be, and no matter whether the iplayin eontiinues to the extreme end of the p ayinig groove or not, or to atop the record in advance of that point if desined, and, further, to eifect an automatic starting of the turn a device of my invention appli tablehy merely swinging the tone am into position to place the main or stylus of the re reducer on the record at the beginning of the playing groove after the device has been set to stopitheturn-tahle at the point clehired. 1 a a The invention consists iurther in the matters hereinafter described and more particu- In the accompanying di'awilngs- Figure 1 is a top plan viewof the turntable and tone arm with reproducer, and showing the automaticsta'rtin and stopping 1n connoctlon therewith and illustrating the parts of said device in one position they assume when holding the turn-table against rotation;

Fig. 2 is a side elevational view of said parts, in the same positions as shown in Fig. 1; a portion of the depending marginal flange of the turn-table being broken away to show those parts of my device located beneath the turn-table;

Fig. 3 is anenlarged top plan view of my device and showing the arts thereof in another position for holliing the turn-table against rotation;

Fig.4 isa perspective view of one of the arms of saiddeviee; p

Fig. "5 "is an enlanged longitudinal vertical sectional View taken on the indirect line 5-5 of Fig. 3; p

Fig. 6qis an enlarged top plan viewoilf 1 my device and showing theparts thereof in t'iieaffloetitii at Latj l liajten-tl Pat nt lmiontlbnnu memmr 26,}010 acne! llo. umoiii v positions when the turntable lame voipe; 1 1

N7 isa i an viewof the ba oflqth e devian igs. B and9are to lan views eh the manner in tvhidh p Ming nected arms of the same maybe moved at oei'tam times relatively "to each other; i Fig. -10ie a formoifnlamp ring *to be benemafter described; and Flg. 11in a top plan view showing a nioii fled form ofa detail of construction tone hereinafter d escnibed. ilnstha drawings, a device of iny invention is shown ap lied to a phonograph of the cabinet type aving a flat top wall 1,=t-hnoagh and above which extends the spindle? rotated by amotor contained in the cabinet bBlOWiSllld top wall, as usual. Mountedon the spindle, above said top wall, is a fla t, encular turntable 3 having a felted n ensurface to support a disk recond 4. e tone arm 5 :ommesat its outer or swingin 'end a reproduce! 6 having a stylus or neefile to contact with and tiravelovertheplayingiface of 'the record. The opposite "end of the tone arm is pivotally mounted in a base member 8 secnred tothe top wall 1 beyond the tunnthe fnictiona lly conrecord by merely swinging th'etone arm positionto begin playing and to antomati cally stop the record when the playing has ceased, no matter what the diameter of the record inay be, or at any othe'rfpoint tween the beginning and the end (if-the laying fg roove, I provide a device constructed as follows:

A fiatbase plate 9 is secured to the wall 1 below the turn-table 3 and between the spindle 2 and base member 8 of the tone arm. On said base plate 9 is mounted a swinging plate l0 ivotall connected with saidbaseplate by apivot in 11. Said plate 10 has two arms 12, 13 iverging outward from the pivot pin 11 and each carrying at its outer end a pad 14 of friction material,

snch as leather, to engage alternately 1 sleeve-28 is held from upward movement by mounted {in said plate 1 .21, and carries at its outer end a roller 22 arranged to have rollingf-contactwith the edges 17,. 1 8,Land 19 ofsaid projection. 16.

' Said rolleiis ?yield'ablylield in ci'i'ntact with said-'partlfibya coiled, spring 23 surround- ":in'g'said rodbetweenthe guides 21 and acting constantlyto force-the roller, forward.

The rod and roller are in alinement with the center-of thelgpivot pin 11, and when "the roller engages the end edge 19 at anyplace between the en'ds-ofsaid-edge, the plate 10 i a; is held in position with its arms 12, 13 out of contactwith the turn-table 3,, as shown in Fig-6,ithus allowing the turn-table to be moved'by the; spindle -2., hem-however,

the plate10hasbeen moved toswing the edge;l9 beyond-.the roller 22, the latter is projected forward by the spring 23, and the roller rides up the" inclined edge, v1? or 18 as the case may be, and swings the plate 10 quickly into position with one of its arms 12,13 into-engagement with the turn-table plate 10-;is-swung into the position Shown- I ;Also.pivotally mounted on the base plate 9 is ai'i-arm 24 having its inner or Swinging endmovable'in arelatively Wide notch or re;ce ssF-2l5qinthe platelOybiatween the arms 12 ,:13,.as 'shown.v At said end, the arm 24 has a fixedpin26 extending downward into an arcuate slot 271 in thebase plate 9. .Said armj 24 hasits other end rig-idly secured to e the lower end of an upright sleeve 28 pivoted on the-base plate 9 by a fixed pin 29 rigidly secured-to said base plate.- The a" head jonfsaidpin, andis provided below said head with screw threads to. receive ,clampnuts 28, 28 and a conical portion 30,

withwhich engages tllQlIlIlGI 'end ofa sec-1 ond arm ,31-, the latter having a conical hole,

32 for that purpose. To enable the frictional engagement between the arm 31 and the sleeve 28 tobe varied by the clamp nuts 28?, the apertured end of said arm 31 is split,fas at 33, to provide parts which may bespread apart bythelclamping action of the nuts 28 ZBy the construction described, the arms-24 and. 31-will swing aboutthe pivot pin 29 asone arm when there is nothing to hold the inner arm from moveinent. .but when saidinner arm 24 is held from movement, as by the pin 26 being i 1 against one end lof the slot 217, the outer arm.

may be swung above the sleeve 28 beyond the position at which theinner arm stops. Thelpurpose of allowing saidfarms to have movement 'elative to. each other at certain times-will presently appear. The arm 31 is provided at its outer end with an elongated in guides 21,-

7 slot 34, into which extends a pin 35 carried by the tone arm 5, as shown. To make the device applicable to any phonograph of the device to machines of different makes, I.

will provide a band 38 as shown in Fig. 10. As shown, with-said band 38 there is a separate piece 39 having at one end a tongue 4(lto be inserted into any one of a plurality of slots 41 in the band. 38. At the opposite end of the piece 39 is a lug 42 having screw threads to receive the clamp screw 43. In the particular device shown, the outer end of the arm 31 is offset upward to bring the same within a convenient position for the pin 35 to extend into the slot 34 and not to contact with the top wall 1 of the cabinet. lhe slot 34 is inclined to the longitudinal axis of the remaining portion of the arm, so that the pin 35 will always engage the edges of the slot 34 in moving in the arc of a circle with the tone arm. In other words, the arrangement is such that the pin 35 will not move away from that edge of the slot 34 against whichthe pin is working.

The device .describedand shown operates as follows: Before a record is placed on the turntable 3, the latter would be held against rotation. by the arm 13 engaging the same,

the parts being in the positions shown in Fig. 3.. To play a record, such as 4, which may for'tlie sake of illustration be of the twelve inch type, the same is placed on the turn-table, and the reproducer 6 turned to bring the stylus or needle 7 into playing position, as usual. Before the needle is placed on the record, the IQPI'OdIlCGl is moved out beyond the turn-table. As the pin 26 is at that end of the slot 27 as shown in Fig. 3, the arm 24 is held against further movement in that direction. The arm 31 may. however, be swung with respect to the arm 24 in a direction permitting the pin 35 to he moved to the outer end of the slot 34, and

when this has occurred the reproducer will reach the position shown by the dot-and l'- i "l D tl' uusn iiics in i 1g. 1. uiing iis moument of the tone arm 5, the turn-table is held against rotation by the arm 13, as shown in said F 3. After the reproduccr has reached this position, it is swung iiiward over the record 4, and in so doing the arms 24 and 31 move as one until the pin 26 reaches the opposite end of the slot 27. During this movement, the arm 24 swings the plate 10 in a direction to throw the arm 13 out of engagement with the turn-table 3. This causes the rear end 16 of said plate to operate against the roller 22, compressing the spring 23, and brings the roller into conlanm tact with the end edge 19 of said plate. The reproducer at that time would be over the record, say about the position as shown in dotted lines in Figs. 3 and 6, and the turn? table would be rotated by the spindle 2. As the reproducer is swung inward toward the center of the record, the arms 24 and 31 move as a unit until the pin 26 has about reached the end of the slot 27 at the arm 13. At that time, the reproducer-has not as yet reached the end of the playing groove and the plate 10 has been swung to a position where the roller 22 will be rojected forward and ride u the inclined edge 17 and throw the arm 1 into engagement with the turn-table and stop the same, as shown in Fig. 1. The arm 24 now being held against further movement in that direction, a continued movement in that direction of the arm 31 is permitted to allow the stylus 7 of the reproducer to be brought to the end of the selection on the record and at a point where itis desired to effect an automatic stopping of the turn-table. This position is shown in Fig. 1. Thus the device has been set to stop the turn-table as soon as the playing of the selection has ceased. The tone arm is then swung outward to place the st lus 7 against the record at the beginning of the selection to play the same, and during such movement, the arms 24 and 31 again move as a unit toward the opposite end of the slot 27. In so doing, the arm 24 operates against the plate 10 and swings its arm 12 out of contact with the turn-table, as shown in Fig. 6, whereupon the turn-table will be rotated and the record played. As

the needle or stylus 7 travels over the face of the record toward the inner end of the playing groove, the arms 24 and 31 will move as a unit and operate against the plate 10 to move it into a position causing the plunger 20 to throw the arm 12 into contact with the soon as the playing of the selection of that particular record has ceased,by first setting the device to stop at that point and then swing the tone arm into a position to start the record and place the stylus on the record at the beginning of the playing groove. Thus my device is capable of use with records of varying diameters and having selections ending at varying points from theextreme end of the playing groove. This is brought about by permitting the angular relation between the arms 24 and 31 to be changed to meet the particular conditions presented by the particular record being played. The swinging movement of the arm 24 is the same at all times, that being determined by the length of the slot 27. Thus, should one record have its selection terminate substantially at the extreme end of the playing groove, the arm 31, in setting the device to stop at the end of that selection, would be moved to occupy a position at such an angle to the arm 24 that the plate 10 would not be swung into turn-table stopping position by the plunger 20 until the stylus completed the playing of that selection while, on the other hand, should another record have its selection terminate more in advance oi. the end of the playing groove than in the first, the arm 31 would, in setting the device to stop the turntable at the end of that selection. be moved to a position to occupy a different angle to the arm 24 and effect a stopping oi the turn-table when the end oi that selection had been reached. Thus it will be seen that my device may be set to stop the turn-table at the end of the selection of any record to be played, and, furthermore, may stop the turn-table before the end of the selection is reached if that is desired. No matter at what point the turn-table is to be stopped automatically, the structure is such that the turn-table will be started automatically by swinging the tone arm into playing position after the device has been set to stop the turn-table at a given point.

With my (:levice applied to a machine, it is apparent that the turn-table will be automatically stopped and automatically started by merely manipulating the tone arm and thus it is unnecessary to operate separate or independent parts to accomplish this result. Moreover, the turn-table will be started as soon as the tone arm is swung into position to place the stylus on the record, thus avoid ing the possibility of accidentally or prematurely actuating the stopping device to eii'ect the stopping of the record before ii'itcnded. Then again, the structure is such that it may be applied to phonographs of different makes, and is simple and inexpensive in its construction and operation. The plunger 20 acts quickly to effect a starting or stopping of the turntable at the moment required. thus producing a quick acting device.

In Fig. 8, the arms 24 and 31. are shown in r'ull lines at one end of the slot 27. and in dotted lines to indicate that such parts move as a unit when being swung away from that end of the slot. In Fig. 9. the same arms are shown in full lines at the opposite end of the slot, and the dotted lines indicate how the arm 31 may be moved relatively to the arm 24 when the latter is held against rotation.

In Fig. 11, I have shown a form of construction whereby the stopping of the turn table at the inner end of the record may be brought about gradually so that the turntable is not stopped with a jerk, and thus avoid digging the stylus or needle into the record. As shown, the rear extension 16 of the pivoted plate 10 has an end edge 44 curved from the inclined side edge 18 to a distance and to such an extent that the plunger 20 operates to increase the pressure of the arm 12 on the turn-table after the arm has been initially moved into contact therewith. T he edge 14 in being curved gradually away from the inclined side edge 18, permits the ro ler 22 to ride directly forward on said curved edge 44 after the arm 12 has been moved into contact with the turn-table, and as the movement of the plate 10 in that direction is continued by the action of the arms 24 and 31, the spring 23 continues to force the plunger 20 forward, and the pres sure of the arm 1.2 on the turn-table is increased so that the turn-table is brought to a stop gradually and without jerking. When such feature of construction is employed, the inclined side edge 17, as shown in the preceding figures, is omitted.

lVhile I have shown and described in detail a device embodying the features of my invention, it is to be of course understood that the details of construction and arrange ment of parts may be variously changed and modified without departing from the spirit andrscope of my invention.

I claim as my invention:

1. In a phonograph, the combination of a turn-table, tone arm mounted to swing over said turn-talre and provided with a reproducer, and mechanism for automaticallv starting and stopping said turn-table, comprising two stop members movable alternately into engagement with the turn-table for stopping the same, and means actuated upon the swinging of the tone arm and reproducer into predetermined positions to cause said stop members to be moved alternately into engagementwith said turn-table, and to move and hold said stop members out of engagement with the turn-table during the movement of the tone arm between those positions.

2. In a phonograph, the combination of a turntable, a tone arm mounted to swing over said turn-table and provi ed with a reproducer, and mechanism for automaticaliv starting and stopping said turn-table, comprising a pivotally mounted plate having two stop members, means acting against said plate for swinging said stop members alternately into engagement with the turn-table for stopping the same, upon the swinging of the tone arm and reproducer into certain predetermined positions and for holding said stop members out of engagement with said turn-table during the movement of the tone arm between those points, and coacting means between said plate and tone arm for swinging said plate by the movement oi said tone arm.

3. In a phonograph, the combination of a turn-table, a tone arm mounted to swing over said turn-table and provided with a reproducer, and mechanism for automatically starting and stopping said turn-table, comprising a pivoted plate having two stop members and an extension, means operating against said extension to swing said plate and move said stop members alternately into engagement with the turntable tor stopping the same, when the tone arm and re nroduccr have been swung into certain predetermined positions, and to hold said stop members out of engagement with said turn-table during the movement of the tone arm between those positions, and a pivoted arm having one end coacting with said plate to swing the same, and the other end connected with said tone arm for moving said pivoted arm upon the swinging of said tone arm.

4. I11 a phonograph, the combination of: a turn-table, a tone arm mounted to swing over said turn-table and provided with a rcproducer, and mechanism tor automatically starting and stopping said turn-table, comprising a pivoted plate having two arms and an extension, the latter having inclined side edges and a curved edge therebetween, means operating against said extension and when engaged with said inclined side edges to swing said arms alternately into engagement with said turn-table for stopping the same, and for holding said arms out oi engagement with said turn-table when engaging the curved edge of said extension, and coacting means between said plate and tone arm for moving said plate upon the swinging of said tone arm.

5. In a phonograph, the combination of a turn-table, a tone arm mounted to swing over said turn-table and provided with a reproducer, and mechanism for automatically starting and stopping said turn-hdde, comprising a pivot-ally mounted plate having two arms and an extension, the latter having inclined side edges and a curved edge therebetween, a' spring pressed plunger carrying a roller acting against said side edges to swing said arms alternately into engagement with said turn-table for stopping the same, and for holding said arms out 01. engagement with said turn-table when engaging said curved edge, and two pivoted arms frictionally engaged, with one coacting with said plate to swing the same and the other having a pin and slot connection with said tone arm.

6. In a phonograph, the combination of a turn-table, a tone arm mounted to swing over said turn-table and provided with a reproducer, and mechanism for automatically starting and stopping said turntable, comprising a pivoted plate having two arms and an extension, the latter having an inclined edge and a curved edge, means operating against said extension for alternately swinging said arms into engagement with said turn-table for stopping the same, and acting when engaging said inclined edge to swing one arm quickly into engagement with said turn-table, and when acting against said curved edge to gradually increase the pressure of the other arm against said turntable, and coacting means between said plate and tone arm for moving said plate upon the swinging of said tone arm.

7. In a phonograph, the combination of a turn-table, a tone arm mounted to swing over said turn-table and rovided with a reproducer, and mechanism for automatically starting and stoppin said turn-table, comprising a pivoted p ate having two stop members, means acting against said plate for swinging said sto members alternately into enga ement with said turn-table for stop ing t e same and for holding said stop mem ers out of engagement with said turntable during a portion of the swinging movement of said tone arm, a pivoted arm coacting with said plate for swinging the same, a second pivoted arm frictionally connected with said first arm, said second arm having an elongated slot arranged at an angle to the length thereof, and a pin carried by the tone arm and extending into said slot.

8. In a phonograph, the combination of a turn-table, a tone arm mounted to swing over said turn-table and provided with a reproducer, and mechanism for automatically starting and stopping said turn-table, comprising a pivoted plate having two stop members, means acting against said plate for swinging said sto members alternately into engagement wit said turn-table for stopping the same and for holding said stop members out of en gement with said turntable during a portlon of the swinging movement of said tone arm, a pivoted arm coacting with said plate for swinging the same,

a second pivoted arm fric'tionally connected with said first arm, said second arm having an elongated slot arranged at an angle to the length thereof, a band clamped about said tone arm, and a pin secured to said band and extending into said slot.

9. A device for automatically starting and stopping the turn-table of a phonograph, comprising a base plate, a pivoted plate having two stop members, means for swinging said stop members alternately into turntable engaging position, a pivoted arm having one end extending into a notch in said plate for swinging said stop members out of turn-table engaging position, a pin secured to said arm and extending into an arcuate slot in said base plate, a second pivoted arm frictionally connected with said first arm and having an elongated slot arranged at an angle to the length of said arm, and a clam ring provided with a pin to engage in sald slot.

10. A device for automatically starting and stopping the turn-table of a phonograph, comprising a base plate, a pivoted plate having two stop members, means for swinging said stop members alternately into turn-table engaging position, a pivoted arm having one end extending into a notch in said plate for swinging said stop members out of turn-table engaging position, a pin secured to said arm and extending into an arcuate slot in said base plate, an upright sleeve rigidly secured to the pivoted end of said arm and having a conical portion above the same, a second arm having one end split and provided with a conical hole to receive the conical portion of said sleeve, clamp nuts for holding said second arm on said sleeve, said second arm having an elongated slot arranged at an angle to the length thereof, and a slip clamp ring provided with a pin to en age in said slot.

11 testimony that I claim the foregoing as my invention, I aflix my signature this 22nd day of December, A. D. 1919.

JOHN A, EITUTIS. 

